
#ifndef __FRENDIAN_DBG_H
#define __FRENDIAN_DBG_H 1

/* Swap bytes in 16 bit value.  */
#define __bswap_constant_16(x) \
     ((unsigned short int) ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)))

#if defined __GNUC__ && __GNUC__ >= 2
# define __bswap_16(x) \
     (__extension__                               \
      ({ register unsigned short int __v, __x = (unsigned short int) (x);     \
     if (__builtin_constant_p (__x))                      \
       __v = __bswap_constant_16 (__x);                   \
     else                                     \
       __asm__ ("rorw $8, %w0"                        \
            : "=r" (__v)                          \
            : "0" (__x)                           \
            : "cc");                              \
     __v; }))
#else
/* This is better than nothing.  */
# define __bswap_16(x) \
     (__extension__                               \
      ({ register unsigned short int __x = (unsigned short int) (x);          \
     __bswap_constant_16 (__x); }))
#endif


/* Swap bytes in 32 bit value.  */
#define __bswap_constant_32(x) \
     ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >>  8) |           \
      (((x) & 0x0000ff00) <<  8) | (((x) & 0x000000ff) << 24))

#if defined __GNUC__ && __GNUC__ >= 2
# if __WORDSIZE == 64 || (defined __i486__ || defined __pentium__         \
              || defined __pentiumpro__ || defined __pentium4__   \
              || defined __k8__ || defined __athlon__         \
              || defined __k6__ || defined __nocona__         \
              || defined __core2__ || defined __geode__       \
              || defined __amdfam10__)
/* To swap the bytes in a word the i486 processors and up provide the
   `bswap' opcode.  On i386 we have to use three instructions.  */
#  define __bswap_32(x) \
     (__extension__                               \
      ({ register unsigned int __v, __x = (x);                    \
     if (__builtin_constant_p (__x))                      \
       __v = __bswap_constant_32 (__x);                   \
     else                                     \
       __asm__ ("bswap %0" : "=r" (__v) : "0" (__x));             \
     __v; }))
# else
#  define __bswap_32(x)                               \
     (__extension__                               \
      ({ register unsigned int __v, __x = (x);                    \
     if (__builtin_constant_p (__x))                      \
       __v = __bswap_constant_32 (__x);                   \
     else                                     \
       __asm__ ("rorw $8, %w0;"                       \
            "rorl $16, %0;"                       \
            "rorw $8, %w0"                        \
            : "=r" (__v)                          \
            : "0" (__x)                           \
            : "cc");                              \
     __v; }))
# endif
#else
# define __bswap_32(x) \
     (__extension__                               \
      ({ register unsigned int __x = (x); __bswap_constant_32 (__x); }))
#endif


#if defined __GNUC__ && __GNUC__ >= 2
/* Swap bytes in 64 bit value.  */
# define __bswap_constant_64(x) \
     ((((x) & 0xff00000000000000ull) >> 56)                   \
      | (((x) & 0x00ff000000000000ull) >> 40)                     \
      | (((x) & 0x0000ff0000000000ull) >> 24)                     \
      | (((x) & 0x000000ff00000000ull) >> 8)                      \
      | (((x) & 0x00000000ff000000ull) << 8)                      \
      | (((x) & 0x0000000000ff0000ull) << 24)                     \
      | (((x) & 0x000000000000ff00ull) << 40)                     \
      | (((x) & 0x00000000000000ffull) << 56))

# if __WORDSIZE == 64
#  define __bswap_64(x) \
     (__extension__                               \
      ({ register unsigned long __v, __x = (x);                   \
     if (__builtin_constant_p (__x))                      \
       __v = __bswap_constant_64 (__x);                   \
     else                                     \
       __asm__ ("bswap %q0" : "=r" (__v) : "0" (__x));            \
     __v; }))
# else
#  define __bswap_64(x) \
     (__extension__                                                           \
      ({ union { __extension__ unsigned long long int __ll;                   \
         unsigned int __l[2]; } __w, __r;                             \
     if (__builtin_constant_p (x))                                        \
       __r.__ll = __bswap_constant_64 (x);                                \
     else                                                                 \
       {                                                                  \
         __w.__ll = (x);                                                  \
         __r.__l[0] = __bswap_32 (__w.__l[1]);                            \
         __r.__l[1] = __bswap_32 (__w.__l[0]);                            \
       }                                                                  \
     __r.__ll; }))
# endif
#endif


/* Conversion interfaces.  */

# if __BYTE_ORDER == __LITTLE_ENDIAN
#  define htobe16(x) __bswap_16 (x)
#  define htole16(x) (x)
#  define be16toh(x) __bswap_16 (x)
#  define le16toh(x) (x)

#  define htobe32(x) __bswap_32 (x)
#  define htole32(x) (x)
#  define be32toh(x) __bswap_32 (x)
#  define le32toh(x) (x)

#  define htobe64(x) __bswap_64 (x)
#  define htole64(x) (x)
#  define be64toh(x) __bswap_64 (x)
#  define le64toh(x) (x)
# else
#  define htobe16(x) (x)
#  define htole16(x) __bswap_16 (x)
#  define be16toh(x) (x)
#  define le16toh(x) __bswap_16 (x)

#  define htobe32(x) (x)
#  define htole32(x) __bswap_32 (x)
#  define be32toh(x) (x)
#  define le32toh(x) __bswap_32 (x)

#  define htobe64(x) (x)
#  define htole64(x) __bswap_64 (x)
#  define be64toh(x) (x)
#  define le64toh(x) __bswap_64 (x)
# endif

#endif /* __FRENDIAN_DBG_H */


